[Digestion] what is igh calorie for a biogas digester?

[Anand Karve]

Dear List members,
thanks for your comments. It is my opinion that all anaerobes extract
oxygen from their substrate. Therefore, I feel that in addition to
digestibility, the oxygen content of the substrate is also an
important factor.In fact, the two go hand in hand. A substance devoid
of oxygen cannot be digested (e.g. plastic, petroleum)
Yours
A.D.Karve
***
Dr. A.D. Karve

Chairman, Samuchit Enviro Tech Pvt Ltd (www.samuchit.com)

Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)


On Mon, Apr 20, 2015 at 8:46 AM, Anand Karve <adkarve at gmail.com> wrote:
> Dear List
> calories are a measure of energy released in the process of oxidation.
> Dung has practically no nutritional value for the methanogens. Human
> food, on the other hand yields large quantity of biogas. So I used to
> advocate the use of high calorie food to be used as feedstock till I
> realised that the feedstock is not oxidised at all in a biogas plant.
> In fact, the biogas producing organisms reduce the feedstock by
> extracting oxygen from it. So how does one assess the quality of
> feedstock that is fed into the biogas plant. Digestibility is one
> criterion. Can the oxygen content of the feedstock be a crucial
> factor?
> Yours
> A.D.Karve
> ***
> Dr. A.D. Karve
>
> Chairman, Samuchit Enviro Tech Pvt Ltd (www.samuchit.com)
>
> Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)